QQ-2 PLUS is the latest and most advanced cleaning robot in Infinuvo CleanMate QQ-2 series robotic vacuum family. It comes with a scheduler module on the home charging base, so users can easily set up their own cleaning schedule.Infinuvo Cleanmate is the only cleaning robot on the market that can sweep, vacuum, and sanitize your floor (using its on-board UV light) all in one single step. CleanMate QQ2 Plus will start the cleaning automatically based on your pre-set schedule, and goes back to the home charing base to re-charge itself when battery is low. You can also let it to perform another cleaning cycle automatically once battery is fully charged. One unique feature of CleanMate QQ2 (you won't find on Roomba or other brands) is that all CleanMate cleaning robots have an on-board UV lamp, which helps to kill bacteria, germs, dust mites and allegens while cleaning your floor. It is an excellent alternative to the more expensive Roomba 510, 530, 560, etc. QQ2 PLUS can easily handle various surfaces including hardwood, tile, linoleum and low pile carpets. It can also go underneath beds and other hard-to-reach places to clean dirt, dust and pet hair, as well as kill bacteria and germs using with its ultraviolet light. With cliff sensors, CleanMate QQ2 will avoid stairs without falling down. CleanMate can be charged up in about 3 hours and work up to 80 minutes on a single charge. Comparing with other brands, Infinuvo CleanMate QQ2 cleaning robot gives you the best performance price ratio in this price range. It is an excellent alternative to more expensive iRobot Roomba 400 series and 500 series robot vacuums.